Churchill's British Resistance - The Special Duties Branch

 

IN Stations Used By The Special Duties Branch

This page was last updated at 7:38pm on 8/5/13

The first IN-stations (also referred to as Control stations or Zero stations) were small buildings designed to look like Meteorological huts, frequently with meteorological charts on the walls and other paraphernalia on display.

Each IN-station covered an area about the size of a county. They served from five to ten OUT-stations and were manned either by a team of three AU signallers or by three ATS subalterns. Listening watches were programmed throughout the day. No instructions were given in writing except for the changes in the code used, which was never in Morse. The code was written on special 'digestible' paper, which had to be chewed and swallowed. As with all parts of the organisation, security was so tight that only the Intelligence officer and his AU Signals sergeant in charge of the area knew all of their local network’s locations.  Buy your memorial badge here